Currently both aggregations really share the same implementation. This commit
splits the implementations so that regular histograms can support decimal
intervals/offsets and compute correct buckets for negative decimal values.
However the response API is still the same. So for intance both regular
histograms and date histograms will produce an
`org.elasticsearch.search.aggregations.bucket.histogram.Histogram`
aggregation.
The optimization to compute an identifier of the rounded value and the
rounded value itself has been removed since it was only used by regular
histograms, which now do the rounding themselves instead of relying on the
Rounding abstraction.
Closes#8082Closes#4847
In several places in our code we need to get a consistent list of files + metadata of the current index. We currently have a couple of ways to do in the `Store` class, which also does the right things and tries to verify the integrity of the smaller files. Sadly, those methods can run into trouble if anyone writes into the folder while they are busy. Most notably, the index shard's engine decides to commit half way and remove a `segment_N` file before the store got to checksum (but did already list it). This race condition typically doesn't happen as almost all of the places where we list files also happen to be places where the relevant shard doesn't yet have an engine. There is however an exception (of course :)) which is the API to list shard stores, used by the master when it is looking for shard copies to assign to.
I already took one shot at fixing this in #19416 , but it turns out not to be enough - see for example https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+multijob-os-compatibility/os=sles/822.
The first inclination to fix this was to add more locking to the different Store methods and acquire the `IndexWriter` lock, thus preventing any engine for accessing if if the a shard is offline and use the current index commit snapshotting logic already existing in `IndexShard` for when the engine is started. That turned out to be a bad idea as we create more subtleties where, for example, a store listing can prevent a shard from starting up (the writer lock doesn't wait if it can't get access, but fails immediately, which is good). Another example is running on a shared directory where some other engine may actually hold the lock.
Instead I decided to take another approach:
1) Remove all the various methods on store and keep one, which accepts an index commit (which can be null) and also clearly communicates that the *caller* is responsible for concurrent access. This also tightens up the API which is a plus.
2) Add a `snapshotStore` method to IndexShard that takes care of all the concurrency aspects with the engine, which is now possible because it's all in the same place. It's still a bit ugly but at least it's all in one place and we can evaluate how to improve on this later on. I also renamed the `snapshotIndex` method to `acquireIndexCommit` to avoid confusion and I think it communicates better what it does.
Currently any code that wants to added NamedWriteables to the
NamedWriteableRegistry can do so via guice injection of the registry,
and registering at construction time. However, this makes the registry
complex: it has both get and register methods synchronized, and there is
likely contention on the read side from multiple threads. The
registration has mostly already been contained to guice modules at node
construction time.
This change makes the registry immutable, taking all of the
NamedWriteable readers at construction time. It also allows plugins to
added arbitrary named writables that it may use in its own transport
actions.
ActiveShardCount.ALL by checking for active shards,
not just started shards, as a shard could be active
but in the relocating state (i.e. not in the started
state).
conform with the requirements of the writeBlob method by
throwing a FileAlreadyExistsException if attempting to write
to a blob that already exists. This change means implementations
of BlobContainer should never overwrite blobs - to overwrite a
blob, it must first be deleted and then can be written again.
Closes#15579
With this commit we add documentation and additional checks to
enforce the cancellation policy of CancellableThreads (which is
disallow `Thread#interrupt()` on any of the threads managed by
it).
If the uuidBytes and ref are converted to utf8, it's possible they can
trip an assertion related to valid UTF-8/UTF-16 ranges, so display them
as hex, not as strings.
method to determine if a write consistency check should be performed
before proceeding with the action. This commit removes this method from
the transport replication actions in favor of setting the ActiveShardCount
on the request, with setting the value to ActiveShardCount.NONE if the
transport action's checkWriteConsistency() method returned false.
After #13834 many tests that used Groovy scripts (for good or bad reason) in their tests have been moved in the lang-groovy module and the issue #13837 has been created to track these messy tests in order to clean them up.
The work started with #19280, #19302 and #19336 and this PR moves the remaining messy tests back in core, removes the dependency on Groovy, changes the scripts in order to use the mocked script engine, and change the tests to integration tests.
It also moves IndexLookupIT test back (even if it has good chance to be removed soon) and fixes its tests.
It also changes AbstractQueryTestCase to use custom script plugins in tests.
closes#13837
* Rename operation to result and reworking responses
* Rename DocWriteResponse.Operation enum to DocWriteResponse.Result
These are just easier to interpret names.
Closes#19664
During our master elections, nodes "vote" for a master being issuing a join request to it. Since this is done in an async fashion, joins may arrive before the master itself has realized it had won the election. Therefore we start accumulating node joins on every node at election start (we don't know the result yet). When the election finish nodes that did not become the master (i.e., joined another node which won the election) need to potentially process and fail any incoming join request they may have received during the election. This is currently achieved by always issuing a cluster state update task that is doomed to fail, even if no pending joins are actually there. That aspect results in confusing (debug) log messages, making it seems like something is wrong. For example (note that `NotMasterException`)
```
[2016-07-30 22:25:53,040][DEBUG][cluster.service ] [node_t1] processing [zen-disco-process-pending-joins [{node_t0}{4SqBTyYNQ82J9c75Cs7jtg}{kutaNSYbTZCSybvqczgWCA}{127.0.0.1}{127.0.0.1:9400} elected]]: execute
[2016-07-30 22:25:53,041][DEBUG][transport ] [node_t1] connected to node [{node_t0}{4SqBTyYNQ82J9c75Cs7jtg}{kutaNSYbTZCSybvqczgWCA}{127.0.0.1}{127.0.0.1:9400}]
[2016-07-30 22:25:53,045][DEBUG][cluster.service ] [node_t1] cluster state update task [zen-disco-process-pending-joins [{node_t0}{4SqBTyYNQ82J9c75Cs7jtg}{kutaNSYbTZCSybvqczgWCA}{127.0.0.1}{127.0.0.1:9400} elected]] failed
NotMasterException[Node [{node_t1}{eAQts270TiGFpoCDE-0PQQ}{or5bsv2ET220su78DLJk5g}{127.0.0.1}{127.0.0.1:9401}] not master for join request]
[2016-07-30 22:25:53,048][DEBUG][cluster.service ] [node_t1] processing [zen-disco-process-pending-joins [{node_t0}{4SqBTyYNQ82J9c75Cs7jtg}{kutaNSYbTZCSybvqczgWCA}{127.0.0.1}{127.0.0.1:9400} elected]]: took [7ms] no change in cluster_state
```
This commit cleans up the logic a bit to only use failure where there are actual joins that are failed. The result is cleaner logs as well:
```
[2016-07-30 22:23:12,880][DEBUG][cluster.service ] [node_t1] processing [zen-disco-election-stop [{node_t0}{jMR5HCpOQnOM4pGeFkUjng}{B5WIZQAdQk2cWbjGZ21mvQ}{127.0.0.1}{127.0.0.1:9400} elected]]: execute
[2016-07-30 22:23:12,881][DEBUG][cluster.service ] [node_t1] processing [zen-disco-election-stop [{node_t0}{jMR5HCpOQnOM4pGeFkUjng}{B5WIZQAdQk2cWbjGZ21mvQ}{127.0.0.1}{127.0.0.1:9400} elected]]: took [0s] no change in cluster_state
[2016-07-30 22:23:12,881][DEBUG][transport ] [node_t1] connected to node [{node_t0}{jMR5HCpOQnOM4pGeFkUjng}{B5WIZQAdQk2cWbjGZ21mvQ}{127.0.0.1}{127.0.0.1:9400}]
```
Before this commit when an index pattern is used to filter the cluster state, only indices metadata are populated and routing table is just empty. This commit aligns the behavior of the filtering of cluster state's routing table with the filtering of cluster state's metadata so that coherent data are returned for both routing table & metadata when index pattern is requested.
In an effort to reduce the number of tiny packages we have in the
code base this moves all the files that were in subdirectories of
`org.elasticsearch.rest.action.admin.cluster` into
`org.elasticsearch.rest.action.admin.cluster`.
Also fixes line length in these packages.
This is cleanup work from #19566, where @nik9000 suggested trying to nuke the isCreated and isFound methods. I've combined nuking the two methods with removing UpdateHelper.Operation in favor of DocWriteResponse.Operation here.
Closes#19631.
In an effort to reduce the number of tiny packages we have in the
code base this moves all the files that were in subdirectories of
`org.elasticsearch.rest.action.admin.indices` into
`org.elasticsearch.rest.action.admin.indices`.
It also adds a `package-info.java` file explaining what the files in
the package *do*.
Also fixes line length in these packages. It makes a single non-checkstyle
change: implementing `ToXContent` on `GetIndexTemplatesResponse`. I did
this because it was the right thing to do and it fixed a line length
violation.
The plain highligher fails when it tries to select the fragments based on a query containing either a `has_child` or `has_parent` query.
The plain highligher should just ignore parent/child queries as it makes no sense to highligh a parent match with a has_child as the child documents are not available at highlight time. Instead if child document should be highlighed inner hits should be used.
Parent/child queries already have no effect when the `fvh` or `postings` highligher is used. The test added in this commit verifies that.
Closes#14999
Currently when the `fields` parameter used in a `multi_match` query contains a
wildcard expression that doesn't resolve to any field name in the target index,
MultiMatchQueryBuilder produces a `null` query. This change changes it to be a
MatchNoDocs query, since returning no documents for this case is already the
current behaviour. Also adding missing field names (with and without wildcards)
to the unit and integration test.
This change adds a second ParseField for the `aggs` field in the search
request so both `aggregations` and `aggs` are undeprecated allowed
fields in the search request
Closes#19504
The current heuristic to compute a default shard size is pretty aggressive,
it returns `max(10, number_of_shards * size)` as a value for the shard size.
I think making it less aggressive has the benefit that it would reduce the
likelyness of running into OOME when there are many shards (yearly
aggregations with time-based indices can make numbers of shards in the
thousands) and make the use of breadth-first more likely/efficient.
This commit replaces the heuristic with `size * 1.5 + 10`, which is enough
to have good accuracy on zipfian distributions.
Clinton Gormley
Robert Muir
Britta Weber
Adrien Grand
Ryan Ernst
Boaz Leskes
Lee Hinman
Ali Beyad
Igor Motov
Robert Muir
Nik Everett
Daniel Mitterdorfer
Tanguy Leroux
Alexander Lin
Christoph Büscher
chengpohi
Michael McCandless
Mike McCandless
Martijn van Groningen
Colin Goodheart-Smithe